Yuhong Group Co.,Ltd
| Payment Terms | T/T, L/C AT SIGHT |
| Supply Ability | 100 tons per month |
| Delivery Time | Depends on order quantity |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Standard | ASTM B111, ASME B111 |
| Material | C68700 (Aluminum brass) |
| Technique | Cold Drawn |
| Temper Designation | O61 Annealed |
| Shape | U-Shape |
| Application | Heat exchangers, condensers, marine systems, and HVAC equipment |
| Brand Name | YUHONG |
| Model Number | ASTM B111/ASME SB111 C68700 U-TUBE |
| Certification | ABS, GL, DNV, NK, PED, ISO 9001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T, L/C AT SIGHT | Supply Ability | 100 tons per month |
| Delivery Time | Depends on order quantity | Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Standard | ASTM B111, ASME B111 | Material | C68700 (Aluminum brass) |
| Technique | Cold Drawn | Temper Designation | O61 Annealed |
| Shape | U-Shape | Application | Heat exchangers, condensers, marine systems, and HVAC equipment |
| Brand Name | YUHONG | Model Number | ASTM B111/ASME SB111 C68700 U-TUBE |
| Certification | ABS, GL, DNV, NK, PED, ISO 9001 | Place of Origin | China |
| High Light | astm b111 u bend tube ，c68700 u bend tube ，b111m u bend tube | ||
Overview
B111 C68700 Aluminum Brass Seamless Tube refers to a specific grade of seamless tube made from C68700 Aluminum Brass that meets the ASTM B111 standard. The ASTM B111 standard outlines the requirements for Seamless Copper and Copper-Alloy Condenser and Heat Exchange Tubes, including C68700 (Aluminum Brass), which is commonly used for heat exchangers, condensers, and similar applications where high corrosion resistance and thermal conductivity are crucial.
B111 C68700 Aluminum Brass Seamless Tube is a high-performance material that combines the corrosion resistance of aluminum brass with the mechanical benefits of a seamless construction. Adhering to ASTM B111 specifications, it is ideal for applications that require reliable, durable, and corrosion-resistant tubes, such as heat exchangers, condensers, marine systems, and HVAC equipment. The seamless nature of these tubes provides superior strength, resistance to internal pressure, and smoother internal surfaces, making them particularly suited for high-stress and high-performance environments.
ASTM B111/B111M Standard Specification for Copper and Copper-Alloy Seamless Tubes
| Standard Grade | ASTM B111 C68700 | EN 12451 CuZn20Al2As | DIN 17660/1785 CuZn20Al2 | BS 2871 CZ 110 | JIS H3300 C6870 | GB/T 8890 HAL 77-2 |
| Cu | 76.0-79.0 | 76.0-79.0 | 76.0-79.0 | 76.0-78.0 | 76.0-79.0 | 76.0-79.0 |
| Al | 1.8-2.5 | 1.8-2.3 | 1.8-2.3 | 1.8-2.3 | 1.8-2.5 | 1.8-2.5 |
| Fe | 0.06 max | 0.07 max | 0.07 max | 0.06 max | 0.06 max | 0.06 max |
| Pb | 0.07 max | 0.05 max | 0.07 max | 0.07 max | 0.07 max | 0.03 max |
| Zn | Bal. | Bal. | Bal. | Bal. | Bal. | Bal. |
| As | 0.02-0.10 | 0.02-0.06 | 0.02-0.035 | 0.02-0.06 | 0.02-0.06 | 0.03-0.06 |
| P | - | 0.01 max | 0.01 max | - | - | 0.02 max |
| Mn | - | 0.1 max | 0.1 max | - | - | - |
| Total Impurities | - | 0.3 max | 0.1 max | 0.3 max | - | 0.3 max |
| Condition | O61 | R390 | F39 | M | O | M |
| - | R340 | F34 | TA | - | Y2 | |
| - | - | - | O | - | - | |
| Yield Strength N/mm2 | 125 min | 150 min | 150-230 | - | - | - |
| - | 120 min | 120-180 | - | - | - | |
| - | - | - | - | - | - | |
| Tensile trength N/mm2 | 345 min. | 390 min | - | - | 373 min | 370min |
| - | 340 min | - | - | - | 350 min | |
| - | - | - | - | - | - | |
| Elongation (%) | - | 45 min | 45 min | - | 40 min | 40 min |
| - | 55 min | 55 min | - | - | 50 min | |
| - | - | - | - | - | - | |
| Hardness Hv5 | - | - | - | 150 min | - | - |
| - | - | - | 85-110 | - | - | |
| - | - | - | 75 max | - | - |
| Elements | ||||||
|---|---|---|---|---|---|---|
| Cu(1,2) | Pb | Zn | Fe | Al | As | |
|
(1) Cu value includes Ag.
| ||||||
| Min (%) | 76.0 | 1.8 | 0.02 | |||
| Max (%) | 79.0 | 0.07 | Rem | 0.06 | 2.5 | 0.06 |
| Form | Temper | Temper Code | Tensile Strength (ksi) | YS-0.5% Ext (ksi) | Elongation (%) | Rockwell F scale |
|---|---|---|---|---|---|---|
|
*Measured at room temperature, 68°F (20°C).
| ||||||
| Tube | Nominal Grain Size 0.025 mm | OS025 | 60 Typ | 27 Typ | 55 Typ | 77 Typ |
| Melting Point - Liquidus°F | 1780 |
|---|---|
| Melting Point - Solidus°F | 1710 |
| Densitylb/cu in. at 68°F | 0.301 |
| Specific Gravity | 8.33 |
| Electrical Conductivity% IACS at 68°F | 23 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 58 |
| Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) | 10.3 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 16000 |
| Modulus of Rigidityksi | 6000 |
| Technique | Suitability |
|---|---|
| Soldering | Fair |
| Brazing | Good |
| Oxyacetylene Welding | Fair |
| Gas Shielded Arc Welding | Fair |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Good |
| Seam Weld | Fair |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Fair |
| Machinability Rating | 30 |
Applications:
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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